New securityonion-samples packages

I've added some new securityonion-samples packages:

securityonion-samples-mta - 20150103-0ubuntu0securityonion1
(from http://malware-traffic-analysis.net/, thanks Brad!)

securityonion-samples-shellshock - 20140926-0ubuntu0securityonion1
(from https://github.com/broala/bro-shellshock, thanks Seth!)

These new packages should resolve the following issue:

Issue 667: New packages for shellshock and malware-traffic-analysis samples
https://code.google.com/p/security-onion/issues/detail?id=667

Screenshots

Installing new samples packages

/opt/samples/mta/ directory

/opt/samples/shellshock/ directory

Using tcpreplay to replay shellshock traffic

ELSA showing Bro notice for ShellShock Exploit

Using tcpreplay to replay malware-traffic-analysis traffic

Sguil alerts from malware-traffic-analysis traffic

Installing
The new packages are now available in our stable repo.  You'll need to use "sudo apt-get install" to install them as shown in the screenshot above.

Feedback
If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

Commercial Support
Need training and/or commercial support?  Please see:
http://securityonionsolutions.com

Help Wanted
If you and/or your organization have found value in Security Onion, please consider giving back to the community by joining one of our teams:
https://code.google.com/p/security-onion/wiki/TeamMembers

Thanks!

New securityonion-bro-scripts and securityonion-web-page packages

As mentioned previously, Seth Hall has developed some comprehensive ShellShock detection scripts for Bro:

"This script detects successful exploitation of the Bash vulnerability with CVE-2014-6271 nicknamed "ShellShock". It's more comprehensive than most of the detections around in that it's watching for behavior from the attacked host that might indicate successful compromise or actual vulnerability."

https://github.com/broala/bro-shellshock
http://blog.securityonion.net/2014/09/bash-vulnerability-part-3.html
http://blog.securityonion.net/2014/09/new-securityonion-bro-scripts.html
http://blog.securityonion.net/2014/09/securityonion-bro-scripts-now-detects.html

Seth has updated these scripts again today to "Add shellscripts as a post-exploit detection mechanism.":
https://github.com/broala/bro-shellshock/commit/4be009f9b7bf8ce9b99533cb4c7b8dd76aba87b7

I've updated the securityonion-bro-scripts package to include these changes.  I've also updated the securityonion-web-page package to include some ELSA queries for "ShellShock Exploits" and "ShellShock Scanners".

New package versions:
securityonion-bro-scripts - 20121004-0ubuntu0securityonion38
securityonion-web-page - 20120722-0ubuntu0securityonion25

Issues Resolved
Issue 618: securityonion-bro-scripts: ShellShock Add shellscripts as a post-exploit detection mechanism
https://code.google.com/p/security-onion/issues/detail?id=618

Issue 617: securityonion-web-page: add queries for Bro ShellShock Notices
https://code.google.com/p/security-onion/issues/detail?id=617

Issue 583: securityonion-web-page: update "All OSSEC Logs" query
https://code.google.com/p/security-onion/issues/detail?id=583

Issue 599: securityonion-web-page: highlight current ELSA query
https://code.google.com/p/security-onion/issues/detail?id=599

Updating
The new packages are now available in our stable repo.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

To apply the new Bro ShellShock detection, you'll need to restart Bro as follows:

sudo nsm_sensor_ps-restart --only-bro

Screenshots

Update Process

Restarting Bro with "sudo nsm_sensor_ps-restart --only-bro"

New ELSA Query for Notice - ShellShock Exploits

New ELSA Query for Notice - ShellShock Scanners

Feedback
If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

Training
Only 15 seats left for the 3-day Security Onion class in Richmond VA!
https://security-onion-class-20141020.eventbrite.com/

Commercial Support
Need commercial support?  Please see:
http://securityonionsolutions.com

Help Wanted
If you and/or your organization have found value in Security Onion, please consider giving back to the community by joining one of our teams:
https://code.google.com/p/security-onion/wiki/TeamMembers

We especially need help in answering support questions on the mailing list:
http://groups.google.com/group/security-onion

We also need help testing new packages:
http://groups.google.com/group/security-onion-testing

Thanks!

securityonion-bro-scripts now detects the ShellShock Qmail SMTP "MAIL FROM" attack vector

Seth Hall added support for the ShellShock Qmail SMTP "MAIL FROM" attack vector to his Bro ShellShock scripts:
https://github.com/broala/bro-shellshock/commit/6ba280179e86243ecc0ed0b84d38e5906bbdcadc

I've updated the securityonion-bro-scripts package to include these changes.

New package version:
securityonion-bro-scripts - 20121004-0ubuntu0securityonion37

Issues Resolved
Issue 616: securityonion-bro-scripts: ShellShock Qmail SMTP "MAIL FROM" attack vector
https://code.google.com/p/security-onion/issues/detail?id=616

Updating
The new package is now available in our stable repo.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

To apply the new Bro ShellShock detection, you'll need to restart Bro as follows:

sudo nsm_sensor_ps-restart --only-bro

Screenshots

Update Process

Restarting Bro to load new ShellShock detection

Feedback
If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

Training
Only 16 seats left for the 3-day Security Onion class in Richmond VA!
https://security-onion-class-20141020.eventbrite.com/

Commercial Support
Need commercial support?  Please see:
http://securityonionsolutions.com

Help Wanted
If you and/or your organization have found value in Security Onion, please consider giving back to the community by joining one of our teams:
https://code.google.com/p/security-onion/wiki/TeamMembers

We especially need help in answering support questions on the mailing list:
http://groups.google.com/group/security-onion

We also need help testing new packages:
http://groups.google.com/group/security-onion-testing

Thanks!

New Setup package adds Snort Community Ruleset to VRT Ruleset

On Friday, I wrote a quick blog post about the ShellShock rules in the Snort Community ruleset:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-5-shellshock.html

The new version of Setup mentioned in that blog post has been tested by Eddy Simons (thanks!) and is now available in our stable PPA.

New package versions:
securityonion-setup - 20120912-0ubuntu0securityonion122

Issues Resolved
Issue 613: Setup: if user chooses VRT rules, enable Community as well
https://code.google.com/p/security-onion/issues/detail?id=613

Updating
The new packages are now available in our stable repo.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

Screenshots

Update Process

ShellShock alert in Snorby

Feedback
If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

Training
Only 17 seats left for the 3-day Security Onion class in Richmond VA!
https://security-onion-class-20141020.eventbrite.com/

Commercial Support
Need commercial support?  Please see:
http://securityonionsolutions.com

Help Wanted
If you and/or your organization have found value in Security Onion, please consider giving back to the community by joining one of our teams:
https://code.google.com/p/security-onion/wiki/TeamMembers

We especially need help in answering support questions on the mailing list:
http://groups.google.com/group/security-onion

We also need help testing new packages:
http://groups.google.com/group/security-onion-testing

Thanks!

Bash Vulnerability Part 6: YABU - Yet Another Bash Update

This is a continuation of the ShellShock posts from the last few days:
http://blog.securityonion.net/2014/09/bash-vulnerability.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-2.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-3.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-4-another.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-5-shellshock.html
http://blog.securityonion.net/2014/09/new-securityonion-bro-scripts.html

Ubuntu has now released yet another bash update:
http://www.ubuntu.com/usn/usn-2364-1/

You should install this updated package as soon as possible.  As always, we recommend using "soup" to apply package updates.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

New securityonion-bro-scripts, securityonion-onionsalt, and salt packages

I've updated the securityonion-bro-scripts package to include Seth Hall's ShellShock detector from here:
https://github.com/broala/bro-shellshock

securityonion-bro-scripts also creates a new directory called /opt/bro/share/bro/intel/ that makes it easy for you to add intel to the Bro Intel framework.

Mike Reeves, Ryan Peck, and I have updated the OnionSalt scripts to replicate more data from master to sensor.  This includes the /opt/bro/share/bro/intel/ directory mentioned above and also OSSEC's agent.conf and local_decoder.xml files.

Finally, SaltStack has updated their salt packages, so we include that as well.

New package versions:
salt - 2014.1.10-1precise1
securityonion-bro-scripts - 20121004-0ubuntu0securityonion36
securityonion-onionsalt - 20140917-0ubuntu0securityonion17

These new packages have been tested by the following (thanks!):
Brian Kellogg
Rob C

Issues Resolved:
Issue 612: securityonion-bro-scripts: include ShellShock detection
https://code.google.com/p/security-onion/issues/detail?id=612

Issue 606: securityonion-bro-scripts: create /opt/bro/share/bro/intel/
with example intel
https://code.google.com/p/security-onion/issues/detail?id=606

Issue 609: Onionsalt should copy /opt/bro/share/bro/intel/
https://code.google.com/p/security-onion/issues/detail?id=609

Issue 580: onionsalt should copy OSSEC agent.conf and local_decoder.xml
https://code.google.com/p/security-onion/issues/detail?id=580

Issue 579: Update salt
https://code.google.com/p/security-onion/issues/detail?id=579

Updating
The new packages are now available in our stable repo.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

To apply the new Bro ShellShock detection, you'll need to restart Bro as follows:

sudo nsm_sensor_ps-restart --only-bro

Screenshots

Update Process

Restarting Bro to load new ShellShock Detection

/opt/bro/share/bro/ now contains intel/ and shellshock/ directories

Bro ShellShock logs (http.log and notice.log)

Feedback
If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

Training
Only 17 seats left for the 3-day Security Onion class in Richmond VA!
https://security-onion-class-20141020.eventbrite.com/

Commercial Support
Need commercial support?  Please see:
http://securityonionsolutions.com

Help Wanted
If you and/or your organization have found value in Security Onion, please consider giving back to the community by joining one of our teams:
https://code.google.com/p/security-onion/wiki/TeamMembers

We especially need help in answering support questions on the mailing list:
http://groups.google.com/group/security-onion

We also need help testing new packages:
http://groups.google.com/group/security-onion-testing

Thanks!

UPDATE 20140927 08:00
Please see:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-6-yabu-yet.html

Bash Vulnerability Part 5: ShellShock rules in Snort Community ruleset

This is a continuation of the ShellShock posts from the last few days:
http://blog.securityonion.net/2014/09/bash-vulnerability.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-2.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-3.html
http://blog.securityonion.net/2014/09/bash-vulnerability-part-4-another.html

If you're running the Snort VRT ruleset, please read this post in its entirety.

The Snort VRT added some ShellShock rules to the Community ruleset:
http://blog.snort.org/2014/09/snort-community-ruleset-out-of-band.html

If you look at your current /etc/nsm/pulledpork/pulledpork.conf file, you'll see that the Snort Community ruleset line is not enabled (or missing altogether if it's been a while since you ran Setup).  I've updated Setup so that when you run Setup and choose Snort VRT, it will also enable the Snort Community ruleset.  If you've already run Setup, the new Setup package will check your existing pulledpork.conf file and add/enable the Snort Community ruleset if necessary.

I've submitted securityonion-setup - 20120912-0ubuntu0securityonion122 for testing:
https://groups.google.com/d/topic/security-onion-testing/W_R_ejUc-Z4/discussion

If you're not already a member of the security-onion-testing Google Group, please join the group and help us test this new package so we can get it released as quickly as possible.

Thanks!

Setup updating pulledpork.conf

Snorby displaying ShellShock alert from Snort Community ruleset

UPDATE 20140927 07:59
Please see:
http://blog.securityonion.net/2014/09/new-securityonion-bro-scripts.html

UPDATE 20140929 08:25
The new Setup package has been tested and published:
http://blog.securityonion.net/2014/09/new-setup-package-adds-snort-community.html

Bash Vulnerability Part 4: Another updated bash package

Earlier today (http://blog.securityonion.net/2014/09/bash-vulnerability-part-2.html), I said:
"There are most likely other issues, so expect additional updates to bash in the near future."

Ubuntu has now released another new bash package:
http://www.ubuntu.com/usn/usn-2363-1/

You should install this updated package as soon as possible.  As always, we recommend using "soup" to apply package updates.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

UPDATE 20140926 14:12
Please see Part 5:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-5-shellshock.html

Bash Vulnerability Part 3

Earlier today, I wrote a quick blog post about detecting exploit attempts for this new Bash Vulnerability:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-2.html

As mentioned in an update to that blog post, Seth Hall wrote a ShellShock detector for Bro that detects successful exploitation (not just an attempt):
https://github.com/broala/bro-shellshock

I've added these Bro scripts to our securityonion-bro-scripts package and submitted the package for testing:
https://groups.google.com/forum/#!topic/security-onion-testing/kOBEKrhKvTo

If you're not already a member of the security-onion-testing Google Group, please join the group and help us test this new package so we can get it released as quickly as possible.

Thanks!

Bro Notice for ShellShock::Exploit

Bro http.log showing ShellShock::HIT

UPDATE 20140926 14:12
Please see Part 4:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-4-another.html

UPDATE 20140927 08:01
The updated securityonion-bro-scripts package has been released to our stable PPA:
http://blog.securityonion.net/2014/09/new-securityonion-bro-scripts.html

Bash Vulnerability Part 2

Yesterday, a vulnerability in bash was announced and I wrote a quick blog post on updating your Security Onion sensors to the latest version of bash:
http://blog.securityonion.net/2014/09/bash-vulnerability.html

There are most likely other issues, so expect additional updates to bash in the near future.

To monitor your network for exploit attempts, IDS signatures are now available from Snort VRT and Emerging Threats (ET).  Assuming you have PulledPork configured correctly, you should have received the VRT and/or ET rules in your rule update this morning.

https://www.snort.org/advisories/vrt-rules-2014-09-24.html

(copied from link above)
1:31978 <-> ENABLED <-> OS-OTHER Bash CGI environment variable injection attempt (os-other.rules)
1:31977 <-> ENABLED <-> OS-OTHER Bash CGI environment variable injection attempt (os-other.rules)
1:31976 <-> ENABLED <-> OS-OTHER Bash CGI environment variable injection attempt (os-other.rules)
1:31975 <-> ENABLED <-> OS-OTHER Bash CGI environment variable injection attempt (os-other.rules)

http://emergingthreats.net/daily-ruleset-update-summary-09242014/

(copied from link above)
2019231 – ET WEB_SERVER Possible CVE-2014-6271 Attempt in URI (web_server.rules)
2019232 – ET WEB_SERVER Possible CVE-2014-6271 Attempt in Headers (web_server.rules)
2019233 – ET WEB_SERVER Possible CVE-2014-6271 Attempt in Client Body (web_server.rules)
2019234 – ET WEB_SERVER Possible CVE-2014-6271 Attempt in Client Body 2 (web_server.rules)

Also, a Bro script is now available from Critical Stack and Hectaman:
https://github.com/CriticalStack/bro-scripts

UPDATE 20140925 14:04
Here's another Bro script from Broala and Seth Hall:
https://github.com/broala/bro-shellshock

If you have any questions or problems, please use our security-onion mailing list:
https://code.google.com/p/security-onion/wiki/MailingLists

UPDATE 20140925 16:37
Please see Part 3:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-3.html

Bash Vulnerability

A vulnerability in bash was announced this morning:

https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack/

http://seclists.org/oss-sec/2014/q3/649

You can test your system to see if it's vulnerable using the POC shown here:
https://twitter.com/kbsingh/status/514801829633593345

env x='() { :;}; echo vulnerable' bash -c "echo this is a test"

For example:

Vulnerable

Ubuntu has released an updated version of bash to resolve this:
http://www.ubuntu.com/usn/usn-2362-1/

You should install this updated package as soon as possible.  As always, we recommend using "soup" to apply package updates.  Please see the following page for full update instructions:
https://code.google.com/p/security-onion/wiki/Upgrade

After installing the updated package, you can verify using the POC again:

New version of bash

UPDATE 20140925 16:38:
Please see Part 2:
http://blog.securityonion.net/2014/09/bash-vulnerability-part-2.html